Sathytes larinus Yin and Li, 2012

Yin, Zi-Wei, Li, Li-Zhen & Zhao, Mei-Jun, 2012, Taxonomic study on Sathytes Westwood (Coleoptera: Staphylinidae: Pselaphinae) from China. Part I, Journal of Natural History 46 (13 - 14), pp. 831-857 : 842-843

Sathytes larinus Yin and Li , sp. nov.

( Figures 3C , 4C , 7C , 8C )

Type material

Holotype. Male, labelled ‘ CHINA: Fujian Prov. / Shanghang County / Guiheshang Village / alt. 1200 m / 9 May 2008 / Nan QI and Zi-Wei YIN leg.’.

Paratype. One female, same label data as holotype.

Description

Male. Body reddish brown, mouthparts and tarsi lighter; BL 2.17. Head ( Figure 3C ) slightly wider than long, HL 0.45, HW 0.50. Vertexal foveae distinct, anterior edge of foveae just posterior to level of posterior margin of eyes; LE: LP = 1.17: 1. Eyes welldeveloped, prominent, each comprises about 20 facets. Antennae with scapes thick and large; pedicels larger than antennomeres III, III larger than IV, IV–VI subequal in length and width, VII–VIII subequal, slightly wider than IV–VI, IX–XI ( Figure 4C ) strongly clubbed, semi-membranous apophysis on antennomeres IX as in Figure 7C ; antennomeres X much wider than long; XI with single basal protuberance covered with tuft of long apical setae.

Pronotum longer than wide, PL 0.51, PW 0.46. Elytra combined wider than long, EL 0.69, EW 0.84. Abdomen wider than long, AL 0.52, AW 0.74; tergite IV 3.2 times as long as next. Length of aedeagus ( Figure 8C ) 0.16.

Female. Slightly larger than male in size: BL 2.36, HL 0.45, HW 0.52, PL 0.56, PW 0.53. Elytra combined wider than long, EL 0.63, EW 0.89, AL 0.72, AW 0.84. Eyes comprise about 15 facets each.

Habitat and distribution

Sifted from the leaf litter of a mixed coniferous broad leaved forest. East China (Fujian).

Etymology

The specific epithet refers to the broad aedeagus.

Remarks

The new species is placed near those having the antennomeres XI with single basal protuberance. Sathytes larinus may be separated by the vertexal foveae located at the level of the posterior margin of the eyes, coupled with the short apophysis of the

antennomeres IX located near middle, which has blunt apices, and the broad form of the aedeagus.

Figures

Figure 3. Head (left half) of Sathytes spp. (A) Sathytes cristatus; (B) Sathytes excertus; (C) Sathytes larinus; (D) Sathytes longitrabis; (E) Sathytes longwangshanus; (F) Sathytes magnus; (G) Sathytes paulus; (H) Sathytes perpusillus; (I) Sathytes rarus; (J) Sathytes sichuanicus; (K) Sathytes tangliangi; (L) Sathytes tibialis; (M) Sathytes usitatus; (N) Sathytes wuyishanus; (O) Sathytes yunnanicus. Scale bars 0.2 mm.

Figure 4. Antennomeres VIII–XI of Sathytes spp. (A) Sathytes cristatus; (B) Sathytes excertus; (C) Sathytes larinus; (D) Sathytes longitrabis; (E) Sathytes longwangshanus; (F) Sathytes magnus. Scale bars 0.2 mm.

Figure 7. Antennomere IX of Sathytes spp. (A) Sathytes cristatus; (B) Sathytes excertus; (C) Sathytes larinus; (D) Sathytes longitrabis; (E) Sathytes longwangshanus; (F) Sathytes magnus; (G) Sathytes paulus; (H) Sathytes perpusillus; (I) Sathytes rarus; (J) Sathytes sichuanicus; (K) Sathytes tangliangi; (L) Sathytes tibialis; (M) Sathytes usitatus; (N) Sathytes wuyishanus; (O) Sathytes yunnanicus. Scale bars 0.2 mm.

Figure 8. Details of Sathytes spp. (A–O) aedeagus; (P) protibia; (A) Sathytes cristatus; (B) Sathytes excertus; (C) Sathytes larinus; (D) Sathytes longitrabis; (E) Sathytes longwangshanus; (F) Sathytes magnus; (G) Sathytes paulus; (H) Sathytes perpusillus; (I) Sathytes rarus; (J) Sathytes sichuanicus; (K) Sathytes tangliangi; (L, P) Sathytes tibialis; (M) Sathytes usitatus; (N) Sathytes wuyishanus; (O) Sathytes yunnanicus. Scale bars 0.1 mm.